CN104680821A - Intelligent traffic system and navigation method thereof - Google Patents
Intelligent traffic system and navigation method thereof Download PDFInfo
- Publication number
- CN104680821A CN104680821A CN201510131825.1A CN201510131825A CN104680821A CN 104680821 A CN104680821 A CN 104680821A CN 201510131825 A CN201510131825 A CN 201510131825A CN 104680821 A CN104680821 A CN 104680821A
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- information
- intelligent transportation
- service centre
- transportation service
- road
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
- G08G1/096805—Systems involving transmission of navigation instructions to the vehicle where the transmitted instructions are used to compute a route
- G08G1/096811—Systems involving transmission of navigation instructions to the vehicle where the transmitted instructions are used to compute a route where the route is computed offboard
Abstract
The invention relates to an intelligent traffic system and a navigation method thereof. The intelligent traffic system comprises an intelligent traffic service center and N mobile terminals, wherein the intelligent traffic service center comprises a distributed server cluster, a geographic information system (GIS), an original information data base and a forecast information data base; the original information data base contains continuously added road driving information; the forecast information data base contains road condition data of all future time intervals; the mobile terminals automatically express to drivers after receiving the navigation command of the intelligent traffic service center, and send the road condition data acquired in the driving process to the intelligent traffic service center. In the intelligent traffic system, dynamic and accurate real-time navigation information is provided for the vehicle drivers, and the road use ratio is also optimized and the congestion degree is also relieved while the vehicle driving directions are optimized. The mobile terminals and a vehicle-mounted navigator are not required to be provided with the GIS, and the map information in the intelligent traffic system does not need to be periodically upgraded or updated.
Description
Technical field
The present invention relates to a kind of intelligent transportation system and air navigation aid thereof, particularly relate to a kind of intelligent transportation system utilizing cloud computing technology and wireless communication technique to optimize single vehicles traffic route.
Background technology
The metropolitan traffic system of current modernization is the manual dispatching system based on centralised video monitoring, and the information acquisition system being fixed on traffic main points obtains traffic dynamic information, and this traffic dynamic information also can be the traffic based on phone feedback.Station broadcast system can release the traffic dynamic information after human-edited, and traffic-police applies the strategy of throwing waves of people into action and to direct traffic on traffic main artery.
Today, navigational system installed by the vehicles of a lot of performance brilliance, and the GIS map (GIS Geographic Information System Geographic Information System) that this GPS (Global Positioning System GPS) car-mounted terminal configures based on self and the satellite positioning information that GPS module obtains are groped to move ahead in the traffic networking maked rapid progress.
All traffic systems of the prior art and air navigation aid, no matter be by RFID (Radio Frequency Identification radio-frequency (RF) identification) data acquisition or based on video information, or by manual telephone system feedback based on voice messaging, the quantity of its data acquisition sampling point and real-time are all discontinuous and incomplete, thus the vehicles in travelling can not Real-time Obtaining front road conditions, can not get accurate, real-time and appropriate driving suggestion.Because driver lacks the real-time assurance to traffic and road information, cause the overall operation situation of highway traffic system can not real-time optimization further, more can not dynamic optimization; So traffic hazard or traffic accident dredging the cycle long, the vehicle pass-through efficiency of road traffic system can not be guaranteed; Be usually arrive the consuming time of destination to be difficult to prediction, not only increase the energy consumption of the unit mileage of vehicle, and often because regular blocking affects work, add social cost.
Summary of the invention
Fundamental purpose of the present invention is open a kind of intelligent transportation system and air navigation aid thereof, for traffic route optimized by the single vehicles, improves the utilization factor of public transport roadnet, and is objectively playing the effect of travel route of dispatching buses.
The invention discloses a kind of intelligent transportation system, comprise intelligent transportation service centre, and N number of mobile terminal, N be more than or equal to 1 integer; Described intelligent transportation service centre comprises distributed server cluster, and Geographic Information System, original information data storehouse and information of forecasting database; Constantly newly-increased road driving information is comprised in described original information data storehouse; The road condition data of following day part is comprised in described information of forecasting database; History in described original information data storehouse carry out prediction computing and draw the following section traffic information in described information of forecasting database with the road network information of real-time road information, combining geographic information system; Described mobile terminal receives the navigation instruction from described intelligent transportation service centre, and gathers the original information data storehouse that road condition data is sent to intelligent transportation service centre when driving.
Intelligent transportation system disclosed by the invention, also comprises following subordinate technical characteristic:
Comprise the road network information corresponding with Geographic Information System (GIS) in described original information data storehouse, and the road of each in road network is all suitably divided into multiple section with starting point; The navigation instruction that described intelligent transportation service centre sends at least comprises the section combination after an optimization.
Information in described information of forecasting database comprises the vehicle flowrate of each section within following a period of time and the predicted data of average speed.
Described intelligent transportation system, also comprises M information terminal, M be greater than 1 integer; Described information terminal exports the information in described information of forecasting database.
Described information terminal interactive information terminal, or fixing platform formula information terminal; Described interactive information terminal is the end message equipment such as various PC, smart mobile phone, net book that can carry out online query, search operation, to inquire about described original information data storehouse and information of forecasting database by mutual mode to intelligent transportation service centre; Described platform formula information terminal continuous reception also shows the device for display of message from intelligent transportation service centre.
Described mobile terminal comprises control module, radio receiving transmitting module, GPS module and human-computer interface module; Described control module comprises CPU, storer, clock and power supply, is the combination of the hardware and software of the coordinated operation for controlling described mobile terminal; Described GPS module obtains current location, travel direction and speed data by Navsat, and gives described control module; Described radio receiving transmitting module completes the communication with intelligent transportation service centre under the control of described control module, uply assigns various data and information; Described human-computer interface module be used for display and or voice and or word export input, realize navigation.
Described interactive information terminal comprises control module, radio receiving transmitting module, human-computer interface module and functional software module; Described control module comprises CPU, storer, clock and power supply, is the combination of the hardware and software of the coordinated operation for controlling described interactive information terminal; Described radio receiving transmitting module completes the communication with intelligent transportation service centre under the control of described control module, uply assigns various data and information; Described human-computer interface module be used for display and or voice output and word or language in-put; Described functional software module is searched for and the information downloaded for being supported in the described raw data base of intelligent transportation service centre and information of forecasting database.
The invention also discloses a kind of air navigation aid of intelligent transportation system, use aforesaid intelligent transportation system, comprise the steps:
The first step, described intelligent transportation service centre accepts and after setting up a navigation task, obtains current point and the impact point of this navigation task, and periodically obtain the current point of change in the process of described mobile terminal movement;
Second step, described intelligent transportation service centre searches out the multiple navigation sections combination from current point to impact point in described Geographic Information System, according to the speed limit in each section in above-mentioned navigation section combination in Geographic Information System and the length situation of distance, according to the requirement optimization navigation section combination of mobile terminal;
3rd step, described intelligent transportation service centre sends the navigation section optimized and combines to described mobile terminal.
Air navigation aid disclosed by the invention, also comprises following subordinate technical characteristic:
In described second step, described intelligent transportation service centre also selects real-time road preferably to optimize the combination of navigation section in section according to the information in described information of forecasting database.
In described second step, described intelligent transportation service centre is periodically according to real-time current point and the combination of the impact point navigation section that chess game optimization is new again; Or, when described mobile terminal request, or when described intelligent transportation service centre finds the front road conditions generation great change of the navigation section combination that described mobile terminal adopts, described intelligent transportation Central Radical factually time current point and the combination of the impact point navigation section that chess game optimization is new again.
In described 3rd step, described intelligent transportation service centre also dynamically reports according to the demand of described mobile terminal and arrives running time required for impact point and mileage.
Air navigation aid of the present invention, also comprises the 4th step, and described mobile terminal sends the driving information of the place vehicles in real time to intelligent transportation service centre, comprises the state of stopping, walking, the speed of traveling and direction; Also load carried state and the vehicle condition state of the place vehicles can be sent.
Intelligent transportation system of the present invention by cloud computing technology and thin client technology utilize wireless communication technique for vehicle driving people provide dynamically, in real time, navigation information accurately, while the single vehicles traffic route of optimization, optimize the utilization factor of traffic route system, improve driving efficiency.Experience taken advantage of by the frame that improve driver, reduces energy consumption of vehicles.Automatic navigator does not require with Geographic Information System (GIS), without the need to periodically upgrading or upgrading cartographic information wherein yet.The real-time optimized and accuracy rate can increase substantially, and the economic benefit brought and social benefit are very remarkable.
Accompanying drawing explanation
Fig. 1 is the theory diagram of intelligent transportation system of the present invention.
Fig. 2 is the workflow diagram that intelligent transportation service centre of the present invention completes the embodiment of navigation task.
Fig. 3 is the theory diagram of an embodiment of mobile terminal of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Be the theory diagram of intelligent transportation system of the present invention as shown in Figure 1, intelligent transportation system comprises intelligent transportation service centre, and N number of mobile terminal, and M information terminal, N and M be here be greater than 1 natural number.Intelligent transportation service centre comprises distributed server cluster, and original information data storehouse and information of forecasting database and Geographic Information System (Geographic Information System is called for short GIS).
Geographic Information System is the infosystem of a kind of acquisition, storage, analysis and management geographical spatial data.It grows up on the Scientific basis such as geography, cartography, surveying and computer science, has the infosystem of the functions such as the acquisition of spatial data, storage, display, editor, process, analysis, output and application.In brief, GIS is an infosystem based on the analysis of data base management system (DBMS) (DBMS) and management spatial object, the fundamental difference of to take geographical spatial data as operand be Geographic Information System and other information systems.In generalized information system, layering editor and information superposition can be carried out.For example newly opened road, and traffic control and road shutoff can carry out human-edited and setting by intelligent transportation service centre to the relevant information in GIS for a long time.Provisional congestion in road can carry out relevant road segments mark according to intelligent computation by system in GIS, making it within the specific time period, be set to passage rate is 0, and newly-established like this navigation process automatically can be got rid of this section of road in this period and enter road network combination.
N number of mobile terminal can be a lot of vehicular navigating instruments, this mobile terminal can gather road condition data when driving and be sent to intelligent transportation service centre, if public transport can also report intelligent transportation service centre the information of self such as full load conditions; Mobile terminal and intelligent transportation service centre keep both-way communication, can also receive the navigation instruction from intelligent transportation service centre, and shown by image and/or voice message out.
M information terminal can be interactive information terminal, also can be fixing platform formula information terminal.Interactive information terminal is various PC, the smart mobile phone of having installed functional software, is implemented and real-time traffic by the traffic of mutual mode to the position of intelligent transportation service centre inquiry oneself, various different regions, etc.Platform formula information terminal can timing receipt from the information of intelligent transportation service centre, the train number that arrives at a station of such as bus or train, whether arrival time, incur loss through delay, etc.
Distributed server cluster is the combination of multiple servers of co-ordination, from terminal, is just a server seemingly.
The detailed setting to traffic road net is comprised, as geographic position, road name, road travel direction (unidirectional or two-way), track quantity, speed limit, crossing turn direction etc. in Distribution GIS of the present invention.Article one, road is often divided into multiple section.Partition principle comprises and there is intersection, track change, speed limit change, bridge, tunnel, and the existence of the node such as road name change.Each section can have a unique identification number to carry out correspondence.Same section has some identical information, such as highway, is divided into the section combination of, between each outlet different, is between the outlet of No. 1, two, section with No. three outlets be section 2 between outlet with No. two outlets, etc.In this generalized information system, each section only has an average speeds in each particular moment.The length in each section is known.
Contain in original information data storehouse continuous renewal by mobile terminal records and the travelling data information imported into.Intelligent transportation service centre according to the geographic position of travelling data information gathering point and direction of traffic, by its with link up with from the specific road section in Geographic Information System.
Information of forecasting database, comprises the road condition data after the optimizing and combining of a large amount of history driving informations to each section collected and real-time information, can provide vehicle flowrate and average speed in following a period of time to each section.
The workflow diagram that intelligent transportation service centre of the present invention completes the embodiment of navigation task as shown in Figure 2.Intelligent transportation service centre is accepting and after setting up a navigation task, first periodically can obtain the current point of navigation task and impact point (such as different longitudes and latitudes, or other mark out the coordinate figures come in road network); Then searching out the multiple sections combination from current point to impact point according to the road network section divided in Geographic Information System, having is that All roads lead to Rome, the section combination usually more than from current point to impact point; And then according to the speed limit in each section and real-time passage situation, select to optimize section combination according to the requirement of client mobile terminal, the section combination that preferred running time is the shortest, or the section combination that mileage is the shortest; Then the section combination optimized is sent to mobile terminal, dynamically can also report according to the demand of mobile terminal and arrive running time required for impact point and mileage.
Here, intelligent transportation service centre can not only optimize the combination of navigation section according to the length of the route of different arrival destinations, can also optimize the combination of navigation section according to the impact of the speed limit of each bar road on the time length arrived required for destination; But also according to the road conditions in the front in the navigation section combination selected by mobile terminal, the navigation section combination more optimized can be upgraded.That is, in the motion process of mobile terminal, intelligent transportation service centre periodically accepts the current point (position that namely mobile terminal is current) of mobile terminal reporting, and periodically search arrives the section combination of impact point repeatedly, and optimize renewal navigation section combination according to original information data storehouse, information of forecasting database.Intelligent transportation service centre can also according to the requirement of mobile terminal, instant search, optimization navigation section combination.
The theory diagram of an embodiment of mobile terminal of the present invention as shown in Figure 3.Comprise control module, radio receiving transmitting module, GPS module and display and or voice output module; Control module comprises CPU, storer, clock and power supply etc. hardware and software, for controlling the coordinated operation of mobile terminal; GPS module obtains current location, travel direction and speed etc. data by Navsat; Radio receiving transmitting module completes the communication with intelligent transportation service centre, uply assigns various data and information; Display and or voice output module be man-machine interface, export instruction etc. information of driving, also can receive input information.
In one embodiment of the invention, navigation task completes like this:
1, the driver of bus or driver and conductor submit the information (including but not limited to place name, latitude, longitude numerical value) of driving destination in advance to;
2, with the client instantaneous acquiring self geographical position information of vehicle synchronous movement, azimuth information of driving a vehicle and velocity information, and by wireless network, above-mentioned information is sent to rapidly the cloud computing center of intelligent transportation;
3, cloud computing center is through comprehensive computing, searches for and optimize section combination in GIS, and navigation instruction (the section combination of optimization) is sent back to client fast;
4, client converts navigation instruction to word, voice and picture cues, will pass to driver with instruction of driving a vehicle; Or client's side link automated driving system directly carries out vehicle drive;
5, vehicle carries out except real-time communication and exchanges data except energy and cloud computing center, can also carry out point-to-point communication, to take precautions against and to avoid the generation of the traffic hazards such as collision with contiguous vehicle.
In another embodiment of the present invention, in the flow process of acquisition for mobile terminal section combination, the flow process that the concrete vehicles obtain intelligent navigation service according to real-time road comprises:
1, driver or driver and conductor's initialization are installed on the intelligent transportation system client of vehicle, and submit the information (including but not limited to place name, latitude, longitude numerical value) of driving destination to;
2, client instantaneous acquiring self geographical position information, driving azimuth information and velocity information, and by wireless network, above-mentioned information is sent to rapidly the cloud computing center of intelligent transportation service centre;
3, cloud computing center is through comprehensive computing (detailed description principle), and driving instruction is sent back to client fast;
4, digitized instruction transformation is become word, voice and picture cues by client, realizes intelligent navigation;
Or client's side link automated driving system directly carries out vehicle drive;
Vehicular client of the present invention carries out except real-time communication and exchanges data except energy and cloud computing center, can also carry out point-to-point communication, to take precautions against and to avoid the generation of the traffic hazards such as collision with contiguous vehicle.
As mentioned above, client of the present invention carry data acquisition simultaneously and upload in real time, data download and instruction express function.Therefore the traffic sensor of each client of the present invention still movement simultaneously.
Intelligent transportation service centre of the present invention is also a kind of cloud computing center, for completing road network state analysis and wagon flow performance analysis, and provides the optimization computing of traffic route for the specific concrete vehicles.
The arithmetic capability of client of the present invention is mainly used in self and to the driving of equipment self having physical connection, and it self can have Geographic Information System (GIS) data resource, also can possess the calculation functions such as route optimization; Intelligent transportation service centre is all deposited for the dynamic map needed for the road conditions of Real-time Obtaining front, the real-time congestion information of traffic route and the road speed information of each major trunk roads---cloud computing center.Client (car-mounted terminal) need not download cartographic information, only needs to obtain the vehicles navigation instruction relevant to destination.Avoid and between server end and car-mounted terminal, to there is the problems such as map version is inconsistent.It is objectively also solving cartographic information that car-mounted terminal uses and the inconsistent problem of actual network of highways information.
The know-why of invention is: car-mounted terminal and cloud computing center carry out bidirectional data exchange by wireless network.Car-mounted terminal discontinuity sends driving states information (geographic position, direction of traffic, the speed of a motor vehicle, timestamp) to cloud computing center.Above-mentioned mass data is refined into the unimpeded congestion status (interval road speed and vehicle flowrate) of each section at day part by cloud computing center.Cloud computing center, after receiving navigation requests, carries out simulation trial in real time to navigation process, provides optimization route.Its technical essential is to use Swarm Intelligence Algorithm (as clustering algorithm, genetic algorithm, chaotic optimization algorithm) and MapReduce pattern the driving states information of each transit point of all vehicle Real-time Collections to be divided geographical section to change into each section in road network at the average speed of different time sections and average traffic by quantity (vehicle flowrate).Cloud computing system then according to these two parameter simulation computings and provide each navigation process expectation running time.
The present invention is in system architecture: car-mounted terminal is responsible for data acquisition, wireless telecommunications and navigation instruction and is resolved (converting voice messaging and graphical cues to).And overwhelming majority calculating completes at cloud computing center in the mode of parallel thread.
Cloud computing center be responsible in original information data storehouse to the foundation of the road network information between urban inner and city and renewal, to road network in the wagon flow of all road interval and the real-time refreshing of arbitrary period speed information, and to the response of navigation requests and the foundation of corresponding navigation process.Different from the disposable response of search engine to Search Results, to the behind of navigation requests response, be foundation, adjustment to each navigation process, follow the tracks of, terminate corresponding a navigation task life cycle.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. an intelligent transportation system, comprises intelligent transportation service centre, and N number of mobile terminal, N be more than or equal to 1 integer; It is characterized in that, described intelligent transportation service centre comprises distributed server cluster, and Geographic Information System, original information data storehouse and information of forecasting database; Constantly newly-increased Real-time Road traffic information is comprised in described original information data storehouse; The road condition data of following day part is comprised in described information of forecasting database; Being combined with the real-time road network information of road driving information in Geographic Information System of history in described original information data storehouse is carried out predicting that computing draws the road condition data of the following day part in described information of forecasting database; Described mobile terminal receives the navigation instruction from described intelligent transportation service centre, and gathers the original information data storehouse that road condition data is sent to intelligent transportation service centre when driving.
2. intelligent transportation system as claimed in claim 1, is characterized in that, the road network information that described Geographic Information System comprises, the road of each in road network is all suitably divided into multiple section with starting point; The navigation instruction that described intelligent transportation service centre sends is the section combination after optimizing.
3. intelligent transportation system as claimed in claim 2, is characterized in that, the information in described information of forecasting database comprises the vehicle flowrate of each section within following a period of time and the predicted data of average speed.
4. intelligent transportation system as claimed in claim 1, is characterized in that, also comprise M information terminal, M be greater than 1 integer; Described information terminal exports the information in described information of forecasting database.
5. intelligent transportation system as claimed in claim 4, it is characterized in that, described information terminal is interactive information terminal, or fixing platform formula information terminal; Described interactive information terminal is the end message equipment such as various PC, smart mobile phone, net book that can carry out online query, search operation, to inquire about described original information data storehouse and information of forecasting database by mutual mode to intelligent transportation service centre; Described platform formula information terminal comprises continuous reception and shows the terminal presentation facility from the information of intelligent transportation service centre.
6. intelligent transportation system as claimed in claim 1, it is characterized in that, described mobile terminal comprises control module, radio receiving transmitting module, GPS module and human-computer interface module; Described control module comprises CPU, storer, clock and power supply, is the combination of the hardware and software of the coordinated operation for controlling described mobile terminal; Described GPS module obtains current location, travel direction and speed data by Navsat, and gives described control module; Described radio receiving transmitting module completes the communication with intelligent transportation service centre under the control of described control module, uply assigns various data and information; Described human-computer interface module be used for display and or voice and or word export input, realize navigation.
7. intelligent transportation system as claimed in claim 5, it is characterized in that, described interactive information terminal comprises control module, radio receiving transmitting module, human-computer interface module and functional software module; Described control module comprises CPU, storer, clock and power supply, is the combination of the hardware and software of the coordinated operation for controlling described interactive information terminal; Described radio receiving transmitting module completes the communication with intelligent transportation service centre under the control of described control module, uply assigns various data and information; Described human-computer interface module be used for display and or voice output and word or language in-put; Described functional software module is searched for and the information downloaded for being supported in the described raw data base of intelligent transportation service centre and information of forecasting database.
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